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" The angle of elevation of a tower at a distance of 20 yd. from its foot is three times as great as the angle of elevation 100 yd. "
Plane and Spherical Trigonometry: An Elementary Text-book - Page 112
by Charles Hamilton Ashton, Walter Randall Marsh - 1900 - 157 pages
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Recent Military, Naval, and Civil Service Examination Papers in Mathematics ...

Braithwaite Arnett - 1874 - 130 pages
...-4771213, log cot32° 30' = 10-1958127, log tan 43° 17'= 9-9739602, log tan43° 18'= 9-9742133. 17. The angle of elevation of a tower at a distance of...angle of elevation 100 yards from the same point. Shew that the height of the tower in feet is - . WOOLWICH. May, 1873. ARITHMETIC AND LOGARITHMS. 1....
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Mathematical Exercises ...: Examples in Pure Mathematics, Statics, Dynamics ...

Samuel H. Winter - 1877 - 452 pages
...Log 3=-4771213 Log cot 32°30'=10-1958127 Log tan 43°17'=9-9739602 Log tan 43°18'=9-9742133. 13. The angle of elevation of a tower at a distance of...elevation 100 yards from the same point. Show that the height of the tower in feet is — =. XL VII. 1. Produce a given straight line so that the rectangle...
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The Accountants' Students' Journal, Volume 1

Accounting - 1884 - 512 pages
...the other sides. Express the area of a triangle in terms of the two angles and the adjacent side. 10. The angle of elevation of a tower at a distance of 20 yards from its foot is twice as great as the angle of elevation 80 yards from the same point. Find the height of the tower....
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Elements of Plane and Spherical Trigonometry: With Numerous Examples

Edward Albert Bowser - Trigonometry - 1892 - 202 pages
...that the elevation is 30° : prove that the height of the balloon above the road is 440V3 yards. 81. The angle of elevation of a tower at a distance of...elevation 100 yards from the same point : show that the soo height of the tower is — - feet. V? 82. From a window it is observed that the angle of elevation...
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A Treatise on Plane and Spherical Trigonometry: And Its Applications to ...

Edward Albert Bowser - Trigonometry - 1892 - 392 pages
...AC make with AB angles 40° 35' 17" and 9° 59' 50" respectively : find CD. Ans. 101.166 feet. 127. The angle of elevation of a tower at a distance of...elevation 100 yards from the same point : show that the height of the tower is — - feet. V7 128. A man standing at a point A, due south of a tower built...
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Plane Trigonometry for Colleges and Secondary Schools

Daniel Alexander Murray - Plane trigonometry - 1899 - 226 pages
...angle, the cosecant of half the angle, and the cosecant of the supplement of double the angle. 22. The angle of elevation of a tower at a distance of 20 yd. from its foot is three times as great as the angle of elevation 100 yd. from the same point, show...
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Plane and Spherical Trigonometry: An Elementary Text-book

Charles Hamilton Ashton, Walter Randall Marsh - Trigonometry - 1902 - 186 pages
...vertical height of the base of the tower above the object is 50 ft. 23. A flagstaff 40 ft. tall stands ou a castle wall. At a horizontal distance of 20 ft....elevation 100 yards from the same point. Show that the height of the tower is —¡= ft. V7 25. Two parallel chords of a circle, lying on the same side of...
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Plane Trigonometry

Daniel Alexander Murray - 1906 - 466 pages
...angle, tha cosecant of half the angle, and the cosecant of the supplement of double the angle. 22. The angle of elevation of a tower at a distance of 20 yd. from its foot is three times as great as the angle of elevation 100 yd. from the same point ; show...
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A Manual of Practical Mathematics

Frank Castle - Mathematics - 1908 - 616 pages
...P bears 46° west of north, at A it bears 8° 45' east of north ; find the distance from A to P. 6. The angle of elevation of a tower at a distance of...three times as great as the angle of elevation 100 yds. from the same point. Show that the height of the tower is 3™ft. N/7 7. (a) The angular elevation...
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Plane [and Spherical] Trigonometry for Colleges and Secondary Schools

Daniel Alexander Murray - Plane trigonometry - 1908 - 358 pages
...angle, the cosecant of half the angle, and the cosecant of the supplement of double the angle. 22. The angle of elevation of a tower at a distance of 20 yd. from its foot is three times as great as the angle of elevation 100 yd. from the same point , show...
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